| 摘要 |
Apparatus for providing a measure of extravascular lung water of a subject using a single thermal indicator, including means (16) for providing an injection of the thermal indicator into the bloodstream of the subject at a position proximal to or in the right heart (10) means (26) for detecting a first time-temperature concentration curve of the bloodstream at a position in the pulmonary artery, means (104) responsive to the first time-temperature concentration curve detected in the pulmonary artery for calculating a characteristic time for the first time-temperature concentration curve, means (28) for detecting a second time temperature concentration curve of the bloodstream at a position in a systemic artery, means (104) responsive to the second time-temperature concentration curve detected in the systemic artery for calculating a characteristic time for the second time-temperature concentration curve, means (104) for calculating the flow of blood through the heart and lungs, and means (104) for calculating a measure of extra-vascular lung water in accordance with the difference between the products of the blood flow times the first characteristic time and the blood flow times the second characteristic time. |
